Liquid level control device for a container

ABSTRACT

A liquid level control device includes an upper connecting portion, a lower connecting portion, a rod member and a tube member. A hollow and a position-limiting article are provided in the upper connecting portion, a through hole is provided in the position-limiting article, a stopping wall is provided beneath the position-limiting article, and a conducting pipe and a screwing section are provided beneath the stopping wall. The lower connecting portion is provided with a screwing section at the top and a stopping block therein. A through hole is formed in the stopping block, and a screwing section is provided in the lower connecting portion. The rod member is provided with a screwing section for a piston ring and screwing articles. The tube member is provided with a screwing section at the top, elongated air-conducting holes in the side wall and a floating block therein.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a liquid level control device with innovatory features, and more particularly to a liquid level control device for a container which is easily operated to effectively control the liquid level in a container, so as to prevent liquid from overflowing outward the container while waste oil being retrieved.

2. Brief Description of the Prior Art

The inventor of the present inventor has several years of experience for selling oil products, and it is troublesome and causes environmental problems to retrieve waste oil because the retrieved waste oil will easily overflow outward an oil container of 50 gallons.

SUMMARY OF THE INVENTION

Therefore, an objective of the present invention is to provide a liquid level control device for a container that can improve the practical utility of a retrieved container.

Another objective of the present invention is to provide a liquid level control device for a container that can be quickly assembled.

Yet another objective of the present invention is to provide a liquid level control device for a container that can be easily operated to effectively control the liquid level in a container.

Accordingly, a liquid level control device for a container in the present invention includes an upper connecting portion, a lower connecting portion, a rod member and a tube member. The upper connecting portion is provided with a hollow in the upper half section and a position-limiting article in the central interior, a through hole is provided in the position-limiting article, a stopping wall is provided beneath the position-limiting article, and a conducting pipe and a screwing section are provided beneath the stopping wall. The lower connecting portion is provided with a screwing section at the top, and a stopping block is provided therein. A through-hole is formed in the stopping block, and a screwing section is provided in the bottom of the lower connecting portion. The rod member is provided with a screwing section for a piston ring and screwing articles to be screwed to. The tube member is provided with a screwing section at the top, elongated air-conducting holes are provided in the side wall of the tube member, and a floating block is provided in the interior of the tube member.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a perspective exploded view of the liquid level control device in accordance with the present invention;

FIG. 2 is a sectional view of the liquid level control device in assembled configuration in accordance with the present invention;

FIG. 3 is a schematic view of the liquid level control device in accordance with the present invention being applied to a vacuum cleaner and a container;

FIG. 4 is a schematic view of the liquid level control device in accordance with the present invention being applied to a container placed on a cart with a starting machine;

FIG. 5 is a schematic view showing the airflow direction in the liquid level control device in accordance with the present invention;

FIG. 6 is a schematic view showing the floating block ascending to prop up the rod member of the liquid level control device in accordance with the present invention;

FIG. 7 is a schematic view showing the piston ring of the rod member being forced to seal up the conducting pipe in the liquid level control device in accordance with the present invention; and, FIG. 8 is a schematic view showing the position of the piston ring of the rod member being adjusted lower or higher Alternatively.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIG. 1, an embodiment of the liquid level control device for a container in the present invention includes an upper connecting portion 1, a lower connecting portion 2, a rod member 3 and a tube member 4.

The upper connecting portion 1 is provided with a hollow 11 in the upper half section and a position-limiting article 12 in the central interior, a through hole 121 is provided in the position-limiting article 12, a stopping wall 13 is provided beneath the position-limiting article 12, and a conducting pipe 14 and a screwing section 15 are provided beneath the stopping wall 13.

The lower connecting portion 2 is provided with a screwing section 21 at the top, and a stopping block 22 is provided therein. A through hole 221 is formed in the stopping block 22, and a screwing section 23 is provided in the bottom of the lower connecting portion 2.

The rod member 3 is provided with a screwing section 31 for a piston ring 32 and screwing articles 33 to be screwed to.

The tube member 4 is provided with a screwing section 41 at the top, elongated air-conducting holes 42 are provided in the side wall of the tube member 4, and a floating block 43 is provided in the interior of the tube member 4.

While being assembled, referring to FIG. 2, the piston ring 32 and the screwing articles 33 are penetrated by the rod member 3 so as for the piston ring 32 and the screwing articles 33 to be screwed to the screwing section 31 of the rod member 3, both ends of the rod member 3 are respectively penetrated through the through hole 121 of the position-limiting article 12 and the through hole 221 of the stopping block 22, the screwing section 15 of the upper connecting portion 1 and the screwing section 21 of the lower connecting portion 2 are screwed to each other for the upper connecting portion 1 to be assembled with the lower connecting portion 2, and the upper section of the screwing section 41 of the tube member 4 is screwed to the screwing section 23 of the lower connecting portion 2 for the tube member 4 to be assembled with the lower connecting portion 2 as well as the upper connecting portion 1.

While being applied, referring to FIGS. 3 and 4, the liquid level control device is secured to a container 7 by means of screwing the lower section of the screwing section 41 of the tube member 4 to the exit 71 of the container 7 or by means of other fixing articles, the bore of the sucking pipe of a vacuum cleaner A (used in a factory or a house) or a starting machine B securing to a cart for the container 7 to be placed on is secured to the upper connecting portion 1, and the bore of a sucking pipe C is secured to the entrance 72 of the container 7.

When the vacuum cleaner A or the starting machine B being started, liquid (such as waste oil or chemical solution) is sucked into the container 7 by the sucking pipe C, if liquid in the container 7 is a little, and air will enter the elongated air-conducting holes 42 along the space in the inner wall of the lower connecting portion 2 through the conducting pipe 14 and the hollow 11 of the upper connecting portion 1 into the sucking pipe of A or B, as shown in FIG. 5. On the contrary, if the liquid level ascends to touch the floating ball 43, the floating ball 43 will be forced to ascend to a certain height to prop up the rod member 3 to force the piston ring 32 to fully seal up the conducting pipe 14 of the upper connecting portion 1 to prevent air from entering and to prevent the sucking pipe C from sucking liquid, as shown in FIGS. 6 and 7, so as to control the liquid level in the container 7 and to prevent liquid from overflowing.

Besides, the position of the piston ring 32 may be adjusted by means of the screwing articles 33, as shown in FIG. 8, to adjust the liquid capacity in the container 7. When the piston ring 32 is adjusted to be higher, the rod member 3 will descend lower accordingly so as to let the floating ball 43 touch the rod member 3 earlier, in order to control the liquid level at a lower position. On the contrary, when the piston ring 32 is adjusted to be lower, the rod member 3 will ascend higher accordingly so as to let the floating ball 43 touch the rod member 3 later, in order to control the liquid level at a higher position.

While the liquid level control device in the present invention is not applied, the bore of the sucking pipe of A or B is separated from the upper connecting portion 1, and then the liquid level control device is removed from the exit 71 of the container 7.

While the preferred embodiments of the invention have been described above, it will be recognized and understood that various modifications may be made therein, and the appended claims are intended to cover all such modifications which may fall within the spirit and scope of the invention. 

1. A liquid level control device being secured to the exit of a container.
 2. A liquid level control device as recited in claim 1, wherein said liquid level control device is secured to the exit of said container by screwing.
 3. A liquid level control device as recited in claim 1, wherein said liquid level control device is secured to by the bore of the sucking pipe of a vacuum cleaner, used in a factory or a house.
 4. A liquid level control device as recited in claim 1, wherein said container is placed on a cart with a starting machine.
 5. A liquid level control device comprising: an upper connecting portion being provided with a hollow in the upper half section, a position-limiting article being provided in the interior of said upper connecting portion, a through hole being provided in said position-limiting article, a stopping wall being provided beneath said position-limiting article, a conducting pipe and a screwing section being provided beneath said stopping wall; a lower connecting portion being provided with a screwing section at the top, a stopping block being provided therein, a through hole being formed in said stopping block, a screwing section being provided in the bottom of said lower connecting portion; a rod member being provided with a screwing section for a piston ring and screwing articles to be screwed to; and, a tube member being provided with a screwing section at the top, elongated air-conducting holes being provided in the side wall of said tube member, a floating block being provided in the interior of said tube member.
 6. A liquid level control device as recited in claim 5, wherein the position of said piston ring on said rod member is adjusted by means of said screwing articles. 